Question

Classify the changes involved in the following processes as physical or chemical changes:

(a) Photosynthesis

(b) Dissolving sugar in water

(c) Burning of coal

(d) Melting of wax

(e) Beating Aluminium to make Aluminium foil

(f) Digestion of food

Answer 1

Physical Changes:
(b) Dissolving sugar in water, (d) Melting of wax, (e) Beating Aluminium to make Aluminium foil.
Chemical Changes:
(a) Photosynthesis, (c) Burning of coal, (f) Digestion of food